Patents by Inventor Kai Harju

Kai Harju has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Applications and methods for the preparation of fatty acid esters of polysaccharides
    Patent number: 5589577
    Abstract: The invention is related to highly substituted, water-insoluble, poorly water-permeable fatty acid esters of polysaccharides and compositions comprising said polysaccharides esters suitable for use in hot-melt adhesives and as coatings for the controlled release of active ingredients, especially fertilizers. A convenient method for preparing said polysacharide esters using e.g. dimethylformamide as a solvent is also disclosed.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: December 31, 1996
    Assignee: Alko Group Ltd.
    Inventors: Soili Peltonen, Kai Harju